S-90128A116 4-48 x 3/4" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel Socket Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc plating, extending service life in demanding industrial environments
- Exceptional tensile strength of 170,000 psi for reliable performance under high-stress applications
- Precise Class 3A thread fit ensures secure, vibration-resistant fastening in critical assemblies
- Fine UNF threads provide improved load distribution and superior holding power
- Hardened Rockwell C37 material offers excellent wear resistance and durability
- Hex socket drive design allows for high-torque installation in confined spaces
- Full threading along the 3/4" length enables flexible positioning and maximum engagement
Professional Applications & Engineering Value
Engineered for precision machinery and heavy-duty equipment, this 4-48 UNF socket head cap screw delivers reliable performance where vibration resistance and structural integrity are paramount. The zinc-plated alloy steel construction provides essential corrosion protection for industrial applications exposed to moisture and chemicals. With its Class 3A fine threads, this fastener maintains tight tolerances in precision assemblies while the hex socket drive enables secure installation in space-constrained applications. The combination of 170,000 psi tensile strength and Rockwell C37 hardness ensures these screws withstand extreme mechanical stresses without compromising joint integrity, making them ideal for automotive, aerospace, and manufacturing applications requiring dependable, high-strength fastening solutions.
Specification Summary & Compliance
This socket head cap screw features precision 4-48 UNF fine threads with Class 3A thread fit for superior dimensional accuracy. Manufactured to ASTM A574 specifications, the fastener ensures consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications. The right-hand threaded, fully threaded design provides maximum versatility across various assembly requirements.
